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Direct synthesis of fluorinated carbon materials via solid-state mechanochemical reaction between graphite and PTFE

phys.org
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A research team, led by Professor Jong-Beom Baek and his team in the School of Energy and Chemical Engineering at UNIST have achieved a significant breakthrough in battery technology. They have developed an innovative method that enables the safe synthesis of fluorinated carbon materials (FCMs) using polytetrafluoroethylene (PTFE) and graphite.
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Schematic presentation of mechanochemical ball-milling polytetrafluoroethyelene (PTFE) and graphite at different rotation speeds. Credit: UNIST



Fluorinated carbon materials have garnered considerable attention due to their exceptional stability, attributed to the strong C-F bonding—the strongest among carbon single bonds. However, traditional methods of fluorination involve highly toxic reagents such as hydrofluoric acid (HF), making them unsuitable for practical applications.

In this study, the research team introduced a straightforward and relatively safe approach for scalable synthesis of FCMs through mechanochemical depolymerization of PTFE—a commonly used compound found in everyday items—and fragmentation of graphite. By utilizing ball-milling techniques that induce both mechanical and chemical reactions, they successfully produced FCMs with significantly improved…
JooHyeon Heo
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